Institute For Scientific Co-operation. (1980). Economics. Laupp & Gobel, Tubingen.
Citação norma ChicagoInstitute For Scientific Co-operation. Economics. Federal Republic of Germany: Laupp & Gobel, Tubingen, 1980.
Citação norma MLAInstitute For Scientific Co-operation. Economics. Laupp & Gobel, Tubingen, 1980.